On Mon, 26 Feb 2007 20:47:42 -0000, Daniele Terdina <[EMAIL PROTECTED]> wrote:
>> screen mode on a standard QL. By entering supervisor mode, the system >> variables are no longer accessible and the space (32768 bytes?) at >> $28000 >> can be used as the second screen. However, you have no access to TRAP > > Entering supervisor is not enough: you also need to disable interrupt 2 > on > non-Minerva QL, which Jan wanted to avoid to have his interrupt routine > called. If he can do without his interrupt routine, then it is easisly > feasible. > You can't use most TRAPs, but a few still seem to work, like the TRAP#1 > used > to communicate to the IPC (D0=$11), useful to be able to directly read > keyboard status. > Yes I forget the exact details and do not have the books to hand. However all Jan wanted to do was to switch between the two screens in order to give a game. I am not certain, but surely most of the QL platform games and the ones by Damon Chaplin, such as Spook and Speedfreaks - the source code for these games appears on my site at: http://www.rwapsoftware.co.uk/pdsoftware.html -- Rich Mellor RWAP Services URL:http://www.rwapsoftware.co.uk URL:http://www.rwapservices.co.uk _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
